High security burglar alarm device
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United States of America Patent
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Feb 11, 2014
Grant Date -
May 10, 2012
app pub date -
Nov 9, 2011
filing date -
Nov 10, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Improved, magnetic high security switch apparatus is provided for use in detecting relative movement between first and second members such as a door frame and door from a close position, wherein the members are proximal, and an open position, where the members are separated. The switch apparatus includes a magnetic shiftable ball switch assembly having an elongated housing and a shiftable ball therein, which traverses an oblique path of travel between respective switch states in response to relative movement between the first and second members. Preferably, the housing is oriented at an oblique angle relative to the horizontal in order to prevent defeat of the switch apparatus through use of an external defeat magnet.
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